If my problem statement is: Which mask filters air more effectively?

And my independent variable is: Type of mask

What's my dependent variable?

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

Why do cells appear different in distilled water than they do in 10% salt water?